Analog Input Ground—These terminals are the input bias current return point.AI GND and AO GND are connected on the device.AI GND and AO GND are isolated from earth ground, chassis ground, P0.GND, and P1.GND.

AI <0..7>

Varies

Analog Input Channels—For single-ended measurements, each signal is an analog input voltage channel. In RSE mode, AI GND is the reference for these signals.

For differential measurements, AI 0 and AI 4 are the positive and negative inputs of differential analog input channel 0. The following signal pairs also form differential input channels: AI <1,5>, AI <2,6>, and AI <3,7>. AI channels are isolated from earth ground and chassis ground.

Analog Output Ground—AO GND is the reference for AO.AI GND and AO GND are connected on the device.AI GND and AO GND are isolated from earth ground, chassis ground, P0.GND, and P1.GND.

PFI <0..5>/P0.<0..5>

P0.GND

Programmable Function Interface or Static Digital Input Channels—Each PFI terminal can be used to supply an external source for AI, AO, or counter/timer inputs. You also can use these terminals as static digital input lines.The PFI terminals are isolated from earth ground, chassis ground, AI GND, AO GND, and P1.GND.

PFI <6..9>/P1.<0..3>

P1.GND

Programmable Function Interface or Static Digital Output Channels—Each PFI terminal can be used to supply an external source for AI, AO, or counter/timer outputs. You also can use these terminals as static digital output lines. The PFI terminals are isolated from earth ground, chassis ground, AI GND, AO GND, and P0.GND.